Remove `reshape_t`

[ricardoV94]

It no longer seems to be true that x.reshape(()) does not work in Aesara.

pymc/pymc/aesaraf.py

Lines 618 to 623 in 761f77d

	def reshape_t(x, shape):
	"""Work around fact that x.reshape(()) doesn't work"""
	if shape != ():
	return x.reshape(shape)
	else:
	return x[0]

[ricardoV94]

Closed via #6118